Model comparison
C4ai Aya Expanse 32b vs o3-mini
o3-mini is the stronger model overall, scoring 36.7 to 35.3 on the Noometry Index.
Last verified . 17 shared benchmarks.
CohereSummary
- They share 17 benchmarks with published results for both. C4ai Aya Expanse 32b scores higher in 3 categories and o3-mini in 5 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in instruction following, where o3-mini leads 75.3 to 62.9.
- o3-mini accepts more context: 200K tokens versus 128K.
- C4ai Aya Expanse 32b has downloadable open weights; the other is API-only.
Side by side
| C4ai Aya Expanse 32b | o3-mini | |
|---|---|---|
| Provider | Cohere | OpenAI |
| Noometry Index | 35.3 | 36.7 |
| Released | 2024-10-24 | 2024-12-20 |
| Weights | Open | Proprietary |
| Context window | 128K | 200K |
| Max output | 4K | 100K |
| Input $ / M tokens | — | $1.10 |
| Output $ / M tokens | — | $4.40 |
| Results tracked | 18 | 51 |
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Category by category
Coding o3-mini leads
C4ai Aya Expanse 32b: 34.3 (#227), o3-mini: 41.4 (#116)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Coding | 1197 | 1378 |
| Aider Polyglot | — | 60.4% |
| SciCode | — | 39.8% |
| GSO | — | 1.3% |
| WeirdML | — | 43.7% |
| LiveBench Coding | — | 82.7% |
| CadEval | — | 54% |
Agentic & Tool Use Not comparable
C4ai Aya Expanse 32b: —, o3-mini: 29.3 (#79)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| Cybench | — | 22.5% |
Reasoning C4ai Aya Expanse 32b leads
C4ai Aya Expanse 32b: 22.3 (#183), o3-mini: 16.3 (#295)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Hard Prompts | 1193 | 1366 |
| ARC-AGI-2 | — | 3% |
| SimpleBench | — | 22.8% |
| ARC-AGI-1 | — | 34.5% |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 17% |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| DTBench | — | 68.8% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| Epoch Capabilities Index | — | 140.35 |
| ForecastBench | — | 59.6 |
| LiveBench | — | 75.9% |
Math C4ai Aya Expanse 32b leads
C4ai Aya Expanse 32b: 31.4 (#195), o3-mini: 27.6 (#236)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Math | 1200 | 1396 |
| FrontierMath (Tiers 1-3) | — | 18.6% |
| FrontierMath Tier 4 | — | 0% |
| OTIS Mock AIME 2024-2025 | — | 76.9% |
| LiveBench Math | — | 77.3% |
| MATH Level 5 | — | 96.5% |
| FrontierMath (Feb 2025 set) | — | 12.4% |
| FrontierMath Tier 4 (v1) | — | 4.2% |
Knowledge o3-mini leads
C4ai Aya Expanse 32b: 32.6 (#202), o3-mini: 38.3 (#135)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Expert | 1182 | 1364 |
| GPQA Diamond | — | 77% |
| SimpleQA Verified | — | 15.3% |
| Confabulations | — | 17.9% |
| Vectara Hallucination Rate | 10.9% | — |
Multilingual o3-mini leads
C4ai Aya Expanse 32b: 38.5 (#225), o3-mini: 45.9 (#159)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Non-English | 1213 | 1319 |
| LMArena Chinese | 1210 | 1379 |
| LMArena French | 1247 | 1333 |
| LMArena German | 1199 | 1303 |
| LMArena Japanese | 1163 | 1286 |
| LMArena Korean | 1158 | 1314 |
| LMArena Russian | 1227 | 1304 |
| LMArena Spanish | 1193 | 1321 |
Instruction Following o3-mini leads
C4ai Aya Expanse 32b: 62.9 (#232), o3-mini: 75.3 (#67)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1196 | 1338 |
| LiveBench Instruction Following | — | 84.4% |
Long Context C4ai Aya Expanse 32b leads
C4ai Aya Expanse 32b: 37.2 (#215), o3-mini: 33.8 (#251)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Longer Query | 1228 | 1343 |
| Fiction.LiveBench | — | 50% |
Writing & Preference o3-mini leads
C4ai Aya Expanse 32b: 42.4 (#230), o3-mini: 50.4 (#177)
| Benchmark | C4ai Aya Expanse 32b | o3-mini |
|---|---|---|
| LMArena Text | 1224 | 1337 |
| LMArena Creative Writing | 1200 | 1286 |
| LMArena Multi-Turn | 1190 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| LiveBench Language | — | 50.7% |
Frequently asked questions
Is C4ai Aya Expanse 32b better than o3-mini?
o3-mini is the stronger model overall, scoring 36.7 to 35.3 on the Noometry Index.
Is C4ai Aya Expanse 32b or o3-mini better for coding?
o3-mini scores higher on coding benchmarks: 41.4 versus 34.3 in the Noometry coding category.
Which has the bigger context window?
o3-mini does, with 200K tokens against 128K.
How many benchmarks do C4ai Aya Expanse 32b and o3-mini share?
17 benchmarks have published results for both models. C4ai Aya Expanse 32b has 18 scored results on Noometry and o3-mini has 51.